JPS5939552A - Regulator for cylinder in rotary press - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for adjusting the center distance between two cylinders in a rotary printing press for processing sheets and strips of various paper thicknesses. Changes in the cylinder axis distance must be made to process different paper thicknesses in order to maintain a constant pressing force for all paper thicknesses.

In a known rotary printing press, rolling rings are arranged on the end face side of the cylinder, which roll in pairs under a predetermined precompression force that is greater than the pressing force. With this device, changing the distance between the cylinder axes and adjusting the pressure gap between the cylinders is only possible by changing the tensile strength. Changing the tension before a new processing operation is not economically possible.

A device for changing the pressure gap is known from East German Patent No. 92,943. In this case, a rotating ring with a small diameter is supported on the end face side of the cylinder via a rolling ring. This rolling ring keeps the precompression force of the rolling ring approximately constant in order to adjust the pressure gap in parallel by means of an eccentric on a compensating gearing not far from the cylinder center point.

In this case, the force introduced from outside the center of the cylinder is much higher than the required precompression force, which results in unnecessary loads on the structural parts and has the disadvantage that changing the pressure gap does not guarantee a uniform pressing force. be.

The object of the invention is to ensure a contact of the rolling rings with low forces, thereby preventing radial movement of the cylinder in the channel, and at the same time allowing the processing of various printed products without changing the tensile forces. It's about making equipment.

The object of the invention is to adjust the cylinder axle distance between two cylinders in such a way that a constant rolling ring pressure is guaranteed for the processing of single-sheet and strip-shaped materials with simultaneous radial adjustment of the cylinders. It's about making equipment.

According to the invention, this object is achieved by providing, in a first rolling ring arranged concentrically on the cylinder axle pin, a conical bushing that is movable axially on the axle pin and that the conical bushing has a maximum A second rolling ring, which is provided with a central conical bore with a diameter larger than the diameter, is attached so as to be movable in the radial direction, the rolling ring being designed as an outer ring being of equal size and corresponding to the diameter of the cylinder. This can be achieved by being

The present invention will be described in detail below based on embodiments shown in the drawings.

FIG. 1 shows a first cylinder 2 provided with a cylinder axle pin 1. FIG. A first rolling ring 3 is arranged concentrically on this cylinder shaft pin 1 . The diameter of the first rolling ring 3 corresponds to the diameter of the first cylinder 2. A second cylinder 4 placed beside the first cylinder 2
is provided with an axial pin 5, and a conical bush 6 whose tapered portion (3) is directed toward the second cylinder 4 is supported on this axial pin 5 so as to be non-rotatable and movable in the axial direction. There is. Above this conical bushing 6 there is a second rolling ring 7.1 formed as an outer ring 7;
The conical central hole 8 of 1 has the same slope as the conical bush 6. The conical bore 8 has a diameter 9 which is always larger than the maximum diameter 10 of the conical bushing 6. The second rolling ring 7.1 is fixed in the axial direction by a stop, which is not shown.

At the point of contact between the two rolling rings 3, 7.1 of the axle pin 5, on the side opposite to 3, a gap 11 of at least a few centimeters is formed between the conical bore 8 and the conical bushing 6.

FIG. 2 shows a partially sectional front view of the cylinder arrangement, in which the first cylinder 2 provided with the first rolling ring 3 is in contact with the second cylinder 4 . cylinder 4
An axially movable conical bush 6 is supported on a part of the shaft pin 5.

A second rolling ring 7.1, which is provided with a central conical bore 8 (4), is supported on this conical bushing 6 so as to be movable in the radial direction. On the large diameter part of the conical bushing 6 there is a collar 12 which prevents a crimp connection between the conical bushing 6 and the rolling ring 7.1;
This ensures the necessary air gap 11. If the pressing force of the rolling ring is constant, a change in the cylinder axis distance between the cylinders 2 and 4 is carried out by an adjustment parallel to the cylinder adjustment of the rolling ring 7.1. For this purpose, the conical bushing 6 is moved in the axial direction via a known transmission (not shown). This axial movement of the conical bushing 6 results in a linear movement of the rolling ring 7.1 on the connecting line connecting the center points of the cylinders 2 and 4.

The known transmission device for causing the movement of the conical bushing 6 is designed in such a way that the transmission elements act with variable functional dimensions and the transfer function can be adjusted in order to be able to adjust the pressing force between the rolling rings during assembly. has been done. .

Another method of adjusting the conical bushing 6) is by means of an independent adjusting device via a well-known transmission element □.

The regulating device can be mechanically, hydraulically, electrically or pneumatically driven. The device according to the invention ensures contact of the rolling rings with low pressure, thereby preventing radial displacement of the cylinder at the channel entrance.

Furthermore, according to the apparatus based on the present invention, various printed materials can be processed without changing the tensile strength, and the distance between the cylinder axes between the two cylinders can be simultaneously adjusted in the radial direction of the cylinders while the pressing force of the rolling ring is constant. Adjustments can be made and adjusted.

[Brief explanation of the drawing]

FIG. 1 is a side view of the cylinder arrangement structure, and FIG. 2 is a partially sectional front view of the cylinder arrangement structure. 1... Cylinder shaft pin, 2... First cylinder, 3
...first rolling ring, 4...second cylinder,
5... Axis pin, 6... Conical bush, 7... Outer ring, 7.1... Second rolling ring, 8... Conical hole, 9... Diameter of conical hole, 10 ...Maximum diameter of conical bush, 11...Void, 12...Collar,]
3...Contact point. Applicant's agent Kiyoshi Inomata

Claims (1)

[Claims] 1. Single-sheet and strip-like materials of various paper thicknesses, in which a rolling ring movable via a transmission for changing the distance between the cylinder axes is arranged on the cylinder axle pin. In a device for adjusting cylinders in a rotary printing press for processing, a first rolling ring (3) arranged concentrically on the cylinder axle pin (1) is provided with an axial direction on the axle pin (5). A second rolling ring (7) containing a conical bushing (6) movable in , 1) is attached so as to be movable in the radial direction. 2. Rolling ring (shaped as outer ring (7)
2. Device according to claim 1, characterized in that the cylinders (3, 7, 1) are sized to correspond to the diameter of the cylinder (2, 4).